feat(attachments): 增加附件阅读解析能力

review_agent/file_summary/skills/attachment_reader.py

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+from __future__ import annotations
+
+from collections.abc import Iterable
+
+from review_agent.models import FileAttachment
+
+from ..services.attachment_reader import read_attachment_details
+from .base import BaseSkill, SkillResult, WorkflowContext
+
+
+class AttachmentReaderSkill(BaseSkill):
+    name = "attachment_reader"
+
+    def run(self, context: WorkflowContext) -> SkillResult:
+        attachments = FileAttachment.objects.filter(
+            conversation=context.batch.conversation,
+            is_active=True,
+        ).exclude(upload_status=FileAttachment.UploadStatus.DELETED)
+        return self.run_for_attachments(attachments)
+
+    def run_for_attachments(self, attachments: Iterable[FileAttachment]) -> SkillResult:
+        results = [read_attachment_details(attachment).to_dict() for attachment in attachments]
+        if not results:
+            return SkillResult(success=False, message="当前对话没有可读取的附件。")
+
+        has_success = any(item["status"] == "success" for item in results)
+        return SkillResult(
+            success=has_success,
+            data={"attachments": results},
+            message="附件解析完成。" if has_success else "附件解析失败。",
+        )